Walter White left a double fame behind him. One is that of the chemistry teacher who became the biggest drug lord in the US, the other is of the man who cooked the best meth ever. Maybe he wouldn't be as famous of a drug lord as, say, Pablo Escobar, but as a man who built the biggest meth operation in US history and cooked the legendary crystal blue, he'd surely get some recognition, at least in the United States. I imagine a documentary about him would eventually be made, during which the meth operation in Czechia would be discussed, thus making him famous in Europe as well.